Record wiper for phonographs



CL LANDGRAF AND J. HERNACKI.

RECORD WIPER FOR PHONOGRAPHS. APPLICATION FILED APR.17- x922.

1,424,023. 7 Patenwmy 25,1922.

3141x211 fou UNITED STATES PATENT OFFICE.

RECORD WIPER FOR PHONOGRAPI-IS.

Specification of Letters Patent.

Patented July 25, 1922.

Application filed April 17, 1922. Serial No. 553,375.

To all whom it may concern:

Be it known that CHARLEY LANDGRAF and JOHN HERNACKI, citizens of theUnited States ofeAmerica, residin at Chicago, in the county of Cook andtate of Illinois. have invented new and useful Improvements in RecordWipers for Phonographs, of which the following is a specification.

The object of the invention is to provlde a simple and eflicient meansin the form of an attachment for phonographs and similar musical andtalking machines for wiping the record to remove dust from the surfacethereof and particularly from the sound groove as a means of preventingirregular or undesirable vibrations of the needle and protecting thesound groove from injury; and with this object in view the inventionconsists in a construction and combination of parts of which a preferredembodiment is shown in the accompanying drawings, wherein:

Figure 1 is a view of a wiper embodying the invention applied in theoperative position to the sound arm of a conventional form ofphonograph.

Figure 2 isan end view of the same to show the inclination of the brushholder to correspond with that of the needle.

The device consists essentially of a supporting arm 10 provided withsuitable means for attachment to a sound arm indicated at -11 andcarrying a brush 12 of which the fibres are attached to a body portioncon sisting of a plate 13 arranged in contact with the supporting armand disposed by reason of the transverse inclination or oblique positionof the latter at an inclination to the plane of the record whichcorresponds approximately with the inclination of the nee dle and which,therefore, is adapted to drag or wipe the fibres along the surface ofthe record as it is rotated to effectually remove any dust or foreignmatter from the sound groove. In the construction illustrated thesupporting arm consists of a flat strip of metaltwisted at 14 to providefor the transverse inclination of that portion to which the brush isattached and which is longitudinally slotted as indicated at 15 for thereception of a set screw 16 which serves to secure the body portion ofthe brush in place in a position best suited to effect the desiredobject and to adapt the brush to be adjusted to suit the construction ofthe phonograph. Furthermore the plate 13 forming the body portionof thebrush is slotted as indicated at 17 also for engagement by said setscrew 16 to provide for adjustment of the brush toward and from theplane of the record to insure an efficient operation thereof.

It will be obvious that the device can be readily applied to any of theordinary or commercial forms of phonographs in a position to precede thesound box needle in traversing the sound groove so as to remove anyparticles of dust or foreign matter which may have accumulated in thegroove to insure a proper reproduction of the record.

Having described the invention, what is claimed as new and useful is 1.A record wiper for phonographs and similar machines having a supportingarm provided with means for engagement with a phonograph sound arm, anda brush having a body portion consisting of a plate arranged in contactwith said arm and adjustably mounted thereon for arrangement in advanceof the sound boxneedle. the sup porting arm having a longitudinal slotand the body portion of the brush being provided with a correspondingslot extending at right angles thereto for mutual engagement by a setscrew to provide for adjustment of the brush in directions parallel withand transverse to the length of the supportmg arm.

2. A record wiper for phonographs and similar machines having asupporting arm provided with means for engagement with a phonographsound arm, and a brush carried by .and connecting with said supportingarm by a single attaching means whereby the brush may be adjusted bothtowards and away from the record or longitudinally of said supportingarm or both.

In testimony whereof they affix their signatures.

GHARLEY LANDGRAF. JOHN HERNAGKI.

